Is it wrong to chuck a sickie for the next 2 days!!! After the crap I put up with today theyre lucky I'm going back at all (and I would only be to collect my belongings and forward some personal emails)

I know it's month end at work and everyone's under pressure but sheesh! It's about time other people step up and stop being babies. I agreed to 4-5 hrs per day but today I didn't have lunch because I was leaving at 1pm. I told my boss at 2.15pm enough was enough and I was going. Someone would have to figure it out (and I walked out!!!)